kill @e[type=item,nbt={Item:{id:"minecraft:echo_shard",tag:{Tags:["echo"]}}}]
clear @s echo_shard{tag:{Tags:["echo"]}} 
summon warden ~ ~ ~
tellraw @a {"text": "挖出来了1%概率的寻声守卫","color": "dark_red"}
advancement grant @a only bdd:entity/echo